Whether you need exact pixel dimensions, a specific file size, or preset sizes for social media — here are the best free image resize tools.
1. FileCurve — Best for Privacy + Precision
Resize to exact pixels or percentage. Lock/unlock aspect ratio. Browser-based (no upload). Also includes crop, compress, and 40+ other tools.
2. Adobe Express Image Resizer — Best Presets
Pre-built sizes for Instagram, Facebook, YouTube thumbnails, Twitter, etc. Requires free Adobe account. Uploads to Adobe servers.
3. BeFunky — Best for Photo Editing Combo
Resize + basic photo editing in one tool. Free tier available. Subscription for advanced features.
4. ResizePixel — Simplest Interface
Dead-simple interface for quick resizing. Supports JPG, PNG, WebP, GIF, BMP, TIFF. Free. Uploads to their servers.
Social Media Size Cheat Sheet
- Instagram post (square): 1080×1080px
- Instagram story: 1080×1920px
- Facebook cover: 820×312px
- YouTube thumbnail: 1280×720px
- Twitter/X header: 1500×500px
- LinkedIn banner: 1584×396px